Celsius to Kelvin Converter
Convert Celsius to Kelvin instantly. Enter any °C value and the Kelvin equivalent appears immediately. Reference table covers from absolute zero to extreme scientific temperatures.
Formula:[value] °C + 273.15 = [result] K
How to convert Celsius to Kelvin
°C + 273.15 = K
For example: 0 °C + 273.15 = 273.1 K
↑ Use the converter aboveCommon Celsius to Kelvin conversions
| Celsius (°C) | Kelvin (K) |
|---|---|
| -273.1 °C | 0 K |
| -200 °C | 73.15 K |
| -100 °C | 173.1 K |
| -40 °C | 233.1 K |
| 0 °C | 273.1 K |
| 20 °C | 293.1 K |
| 37 °C | 310.1 K |
| 100 °C | 373.1 K |
| 200 °C | 473.1 K |
| 500 °C | 773.1 K |
| 1,000 °C | 1 K |
| 5,505 °C | 5 K |
About this conversion
Celsius to Kelvin is used in science, physics, chemistry, and engineering, where the Kelvin scale is the SI unit of temperature. Unlike Celsius, Kelvin has no negative values — 0 K is absolute zero (−273.15°C), the coldest theoretically possible temperature. The conversion is the simplest of all temperature conversions: just add 273.15. Key scientific reference points: 0 K = −273.15°C (absolute zero), 273.15 K = 0°C (water freezes), 373.15 K = 100°C (water boils), 310.15 K = 37°C (body temperature), 5,778 K ≈ surface of the Sun. Kelvin is used in thermodynamics, gas laws (PV = nRT uses Kelvin), black body radiation, and colour temperature in photography and LED lighting.